World

by Yuval Noah Harari

by Olivia B. Waxman

by Kofi Annan

by Ariana Berengaut and Edward Fishman

by Karl M. von der Heyden

by Daniel Benjamin

by Yedidia Stern

by Lisa Marie Segarra

by TIME Staff

by Ryan Kilpatrick

by Justin Worland

by Jennifer Calfas

by Aric Jenkins

by Moza bint Nasser

by Dennis Ross and Jason M. Brodsky